The difference is real and intentional, but isn't it akin to the difference between (IIRC a discussion several years ago) the Polish/Czech acute and the French acute - the former is more vertical? It has been decided that there is no need for two combining acute signs.
Leo On Wed, Jul 2, 2014 at 12:12 PM, Kent Karlsson <[email protected]> wrote: > Sounds to me that what you really want is to have two different breve > characters > (assuming that the distinction is real and intentional, and not a > happenstance). > That would require encoding a new combining character, AFAICT... > > /Kent K > > > > Den 2014-07-02 20:48, skrev "Leo Broukhis" <[email protected]>: > > Jukka, > > If the font happens to have lunar breve at U+0306, whereas the letter й > has the rounded bowl breve, using CGJ should guarantee to achieve > distinctive rendering, because <и, CGJ, U+0306> is not canonically > equivalent to <и, U+0306> (cf. "The sequences <a, umlaut> and <a, CGJ, > umlaut> are not canonically equivalent.") and therefore the renderer must > not be allowed to pick the glyph for й instead as its canonical > composition. This is a hack, but a legal hack. > > Leo > > > On Wed, Jul 2, 2014 at 11:13 AM, Jukka K. Korpela <[email protected]> > wrote: > > 2014-07-02 20:34, Philippe Verdy wrote: > > CGJ would be better used to prevent canonical compositions but it won't > normally give a distinctive semantic. > > > In the question, visual difference was desired. The Unicode FAQ says: > “The semantics of CGJ are such that it should impact only searching and > sorting, for systems which have been tailored to distinguish it, while > being otherwise ignored in interpretation. The CGJ character was encoded > with this purpose in mind.” > http://www.unicode.org/faq/char_combmark.html < > http://www.unicode.org/faq/char_combmark.html> > > So CGJ is to be used when you specifically want the same rendering but > wish to make a distinction in processing. > > Yucca > > > > _______________________________________________ > Unicode mailing list > [email protected] > http://unicode.org/mailman/listinfo/unicode < > http://unicode.org/mailman/listinfo/unicode> > > > > ------------------------------ > _______________________________________________ > Unicode mailing list > [email protected] > http://unicode.org/mailman/listinfo/unicode > >
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